Summary
A procedure for the simultaneous spectrophotometric determination of organic additives and the quantitation of Ni(II) in Zn-Ni electrolytic baths is described. Organic additives were determined by resolving the mixed spectrum over the wavelength range 278–330 nm by applying a least-squares fitting computational program to the standard spectrum of each component. Spectra were recorded on a hydroalcoholic medium (15% methanol) containing 0.1 mol/l NH4Cl. The Ni(II) concentration was determined by applying the program to the first-derivative spectrum over the wavelength range 660–820 nm.
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Blanco, M., Coello, J., Iturriaga, H. et al. Application of multicomponent spectrophotometry to analytical control of electroplating solutions. Fresenius J Anal Chem 340, 410–414 (1991). https://doi.org/10.1007/BF00322412
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DOI: https://doi.org/10.1007/BF00322412